MailValid Email Verification
Verify emails: syntax, MX, SMTP mailbox, disposable, role and catch-all checks. Single and bulk.
Should I use this
Quality & Safety
Findings (1)
- LOWTool 'get_credit_balance' description lacks action verbin get_credit_balance
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"email-verifier": {
"url": "https://mailvalid.io/mcp/"
}
}
}Remote endpoints
https://mailvalid.io/mcp/streamable-httpWhat it can do
Tool inventory
Tools (6)
⚪verify_email(email)
Verify a single email's deliverability (syntax, DNS/MX, SMTP mailbox, disposable / role / catch-all detection, confidence score). Costs 1 credit for a billable result (valid/invalid/catch_all/do_not_mail), whether fresh or served from cache. `unknown` results are free. Requires an API key. Returns {success, credits_used, result}.
Input Schema
{
"type": "object",
"properties": {
"email": {
"title": "Email",
"type": "string"
}
},
"required": [
"email"
],
"title": "verify_emailArguments"
}🟡submit_bulk_verification(emails, webhook_url)
Queue a list of emails for asynchronous verification. Reserves up to N credits (final charge settles on completion). Poll get_bulk_job for status and results. Optionally provide webhook_url for a completion callback. Requires an API key. Returns {job_id, status, total_emails, credits_reserved}.
Input Schema
{
"type": "object",
"properties": {
"emails": {
"items": {
"type": "string"
},
"title": "Emails",
"type": "array"
},
"webhook_url": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Webhook Url"
}
},
"required": [
"emails"
],
"title": "submit_bulk_verificationArguments"
}🟢get_bulk_job(job_id)
Get the status, progress, and (when complete) results of a bulk job by its job_id. Requires an API key.
Input Schema
{
"type": "object",
"properties": {
"job_id": {
"title": "Job Id",
"type": "string"
}
},
"required": [
"job_id"
],
"title": "get_bulk_jobArguments"
}🟢list_bulk_jobs(page, page_size, status)
List your recent bulk verification jobs (paginated, newest first). Optionally filter by status. Requires an API key.
Input Schema
{
"type": "object",
"properties": {
"page": {
"default": 1,
"title": "Page",
"type": "integer"
},
"page_size": {
"default": 20,
"title": "Page Size",
"type": "integer"
},
"status": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Status"
}
},
"title": "list_bulk_jobsArguments"
}🔴cancel_bulk_job(job_id)
Cancel a pending or processing bulk job and release any reserved credits. Requires an API key.
Input Schema
{
"type": "object",
"properties": {
"job_id": {
"title": "Job Id",
"type": "string"
}
},
"required": [
"job_id"
],
"title": "cancel_bulk_jobArguments"
}🟢get_credit_balance
Return your current credit balance and lifetime usage. Requires an API key.
Input Schema
{
"type": "object",
"properties": {},
"title": "get_credit_balanceArguments"
}Community
Evidence